A natural population of the lizard Uta stansburiana occupying a fenced 9-ha area in southern Nevada was exposed to essentially continuous γ irradiation from an artificial source between February 1964 and September 1973. Tissue doses were estimated using implanted lithium fluoride microdosimeters. Females became sterile as early as 11 months of age, but many were still fertile at ages of 20 months and a very few may have reproduced at 32 months. Dosimetry showed some females to be sterile after accumulated doses of around 500 rad, while others may have required 1000 or more rad. One female estimated to have received over 1200 rad was still reproductive. Irradiated females may pass through a state of half sterility, during which time they possess one functional ovary. Female U. stansburiana are sterilized at lower doses than the sterilizing dose (1500 rad) previously suggested for the leopard lizard, Crotaphytus wislizenii.
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Research Article| April 01 1977
Sterility among Female Lizards (Uta stansburiana) Exposed to Continuous γ Irradiation
Radiat Res (1977) 70 (1): 154–163.
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Frederick B. Turner, Philip A. Medica; Sterility among Female Lizards (Uta stansburiana) Exposed to Continuous γ Irradiation. Radiat Res 1 April 1977; 70 (1): 154–163. doi: https://doi.org/10.2307/3574739
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